<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <!-- 添加角色按钮 -->
      <el-row>
        <el-col>
          <el-button type="primary" @click="addDialogVisible = true">添加角色</el-button>
        </el-col>
      </el-row>

      <!-- 角色列表区域 -->
      <el-table :data="rolelist" border stripe="">
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']"
              v-for="(item1, i1) in scope.row.children"
              :key="item1.id"
            >
              <!-- 一级权限 -->
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row, item1.id)">
                  {{ item1.authName }}
                </el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 二三级权限 -->
              <el-col :span="19">
                <!-- 嵌套渲染二级权限 -->
                <el-row
                  :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']"
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      closable
                      @close="removeRightById(scope.row, item2.id)"
                    >
                      {{ item2.authName }}
                    </el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <!-- 三级权限 -->
                  <el-col :span="18">
                    <el-tag
                      type="warning"
                      v-for="(item3, i3) in item2.children"
                      :key="item3.id"
                      closable
                      @close="removeRightById(scope.row, item3.id)"
                    >
                      {{ item3.authName }}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button size="mini" type="primary" icon="el-icon-edit"
            @click="showEditDialog(scope.row.id)"
              >编辑</el-button
            >
            <el-button size="mini" type="danger" icon="el-icon-delete"
              @click="removeRoleById(scope.row.id)" >删除</el-button
            >
            <el-button
              size="mini"
              type="warning"
              icon="el-icon-setting"
              @click="removeUserById(scope.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>

    <!-- 分配权限对话框 -->

    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%"
      @close="setRightDialogClosed"
    >
      <!-- 树形控件 -->
      <el-tree
        :data="rightslist"
        :props="treeProps"
        show-checkbox
        node-key="id"
        default-expand-all
        :default-checked-keys="defkeys"
        ref="treeRef"
      ></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights"
          >确定</el-button
        >
      </span>
    </el-dialog>
    
     <!-- 添加角色对话框 -->
    <el-dialog
      title="添加角色"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <!--  内容主题区域-->
      <el-form
        :model="addRoleForm"
        :rules="addRolRules"
        ref="addRoleFormRef"
        label-width="70px"
      >
        <el-form-item label="角色名称" prop="rolename" >
          <el-input v-model="addRoleForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="">
          <el-input v-model="addRoleForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRole">确 定</el-button>
      </span>
    </el-dialog>

        <!--修改角色对话框  -->
    <el-dialog
      title="修改角色信息"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <!-- 内容主题区域 -->
      <el-form
        :model="editRoleForm"
        :rules="editRoleFormRules"
        ref="editRoleFormRef"
        label-width="70px"

      >
        <el-form-item label="角色名称">
          <el-input v-model="editRoleForm.roleName" ></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="email">
          <el-input v-model="editRoleForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editRoleInfo" >确 定</el-button>
      </span>
    </el-dialog>



  </div>
</template>


<script>
export default {
  data() {
    return {
      //    所有角色列表
      rolelist: [],
      // 控制分配权限对话框开关
      setRightDialogVisible: false,
      // 所有权限的数据（树状）
      rightslist: [],
      // 树形控件的属性绑定对象
      treeProps: {
         label: 'authName',
         children: 'children'
      },
      // 默认选中的节点id值数组
      defkeys :[],
      // 当前即将分配权限的角色id
      roleId: '',
      // 控制添加角色对话框的显示与隐藏
      addDialogVisible: false,
      // 添加角色的表单数据
      addRoleForm: {
        roleName:'',
        roleDesc:''
      },
      // 添加表单的验证规则对象
      addRolRules: {
        roleName: [
          {
            required: true,
            message: '请输入角色名称',
            trigger: 'blur',
          },
          {
            min: 3,
            max: 10,
            message: '角色名长度在3~10个字符之间',
            trigger: 'blur',
          },
        ],
       },
       // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的角色信息对象
      editRoleForm: {},
      // 修改角色表单的验证规则对象
      editRoleFormRules: {
        roleName: [
          {
            required: true,
            message: '请输入角色名称',
            trigger: 'blur',
          },
          {
            min: 3,
            max: 10,
            message: '角色名长度在3~10个字符之间',
            trigger: 'blur',
          },
        ],
       },

    }
  },
  created() {
    this.getRolesList()
  },
  methods: {
    async getRolesList() {
      //    获取所有角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }

      this.rolelist = res.data
      // console.log(this.rolelist)
    },
    // 根据id删除对应权限
    async removeRightById(role, rightId) {
      // 弹框提示用户是否删除
      const confirmResult = await this.$confirm(
        '此操作将永久删除该文件, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning',
        }
      ).catch((err) => err)

      if (confirmResult !== 'confirm') {
        return this.$message.info('取消了删除权限！')
      }

      // console.log('确认了删除');
      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightId}`
      )
      if (res.meta.status !== 200) {
        return this.$message.error('删除权限失败！')
      }

      // this.getRolesList()
      role.children = res.data
    },
    // 展示分配权限对话框
    async showSetRightDialog(role) {
      this.roleId = role.id
      // 获取所有权限数据
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限数据失败')
      }
      // 获取到的权限数据
      this.rightslist = res.data
      // console.log(this.rightslist)
      
      // 递归获取3级节点
      this.getLeafKeys(role,this.defkeys)
      this.setRightDialogVisible = true
    },
    // 递归获取全部三级权限的id，
    getLeafKeys(node,arr) { 
      // 三级节点没有children属性
      if(!node.children){
        return arr.push(node.id)
      }

      node.children.forEach(item => this.getLeafKeys(item,arr)
      );
    },
    // 监听分配对话框的关闭事件
    setRightDialogClosed() {
      this.defkeys = []
    },
    // 点击为角色分配权限
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]

      // console.log(keys);
      const idSte = keys.join(',')

    const {data:res} = await this.$http.post(`roles/${this.roleId}/rights`,{rids:idSte})
 
     if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败!')
      }

      this.$message.success('分配权限成功!') 
      this.getRolesList()
      this.setRightDialogVisible = false
    },
        // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.addRoleForm = []
      // this.$refs.addRoleFormRef.resetFields()
    },
    // 点击按钮，添加角色
    addRole() {
      this.$refs.addRoleFormRef.validate(async (valid) => {
        if (!valid) return
        // 发起添加用户的网络请求
        const { data: res } = await this.$http.post('roles', this.addRoleForm)
        //  console.log(res);
        if (res.meta.status !== 201) {
          this.$message.error('添加角色失败！')
        }

        this.$message.success('添加角色成功！')
        //  隐藏添加角色的对话框
        this.addDialogVisible = false
        //  重新获取角色列表
        this.getRolesList()
      })
    },
        // 展示编辑角色对话框
    async showEditDialog(id) {
      //  console.log(alert(typeof id));
      const { data: res } = await this.$http.get('roles/' + id)

      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败')
      }

      this.editRoleForm = res.data
      this.editDialogVisible = true
    },
    //  监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editRoleFormRef.resetFields()
    },
    // 修改角色信息并提交
    editRoleInfo() {
      this.$refs.editRoleFormRef.validate(async (valid) => {
        if (!valid) return
        // 发起修改用户的网络请求
        const { data: res } = await this.$http.put(
          'roles/' + this.editRoleForm.roleId,
          {
            roleName: this.editRoleForm.roleName,
            roleDesc: this.editRoleForm.roleDesc,
          }
        )
        // return console.log(this.editRoleForm);
        if (res.meta.status !== 200) {
          return this.$message.error('更新角色信息失败！')
        }
        this.$message.success('更新角色信息成功！')
        //  隐藏添加用户的对话框
        this.editDialogVisible = false
        //  重新获取用户列表
        this.getRolesList()
      })
    },
        //  根据id删除对应用户信息
    async removeRoleById(id) {
      // console.log(id);
      //  弹框提示是否删除用户
      const confirmResult = await this.$confirm(
        '此操作将永久删除该角色, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning',
        }
      ).catch((err) => err)
      // 确认删除返回字符串 confirm
      // 取消删除返回字符串 cancel
      // console.log(confirmResult);
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      // console.log('确认删除');
      const { data: res } = await this.$http.delete('roles/' + id)

      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败!')
      }

      this.$message.success('删除用户成功!')
      this.getRolesList()
    },

  },
}
</script>



<style lang="less" scoped>
.el-tag {
  margin: 7px;
}

.bdtop {
  border-top: 1px solid #eee;
}

.bdbottom {
  border-bottom: 1px solid #eee;
}

.vcenter {
  display: flex;
  align-items: center;
}
</style>